Going fat isn't just a fun way to ride—it's a ride revolution. The security and control that the wheel system, found on our Fatboy, provides is unparalleled. You get dramatically more traction, grip, and floatation than with traditional mountain tires, all without sacrificing much to climbing efficiency.
The end result is easy to explain—you have way more fun. And to make sure of it, we built the Fatboy with a durable list of components that are low-maintenance and eager to perform season after season. Have more fun—go fat.
- The frame features an M5 alloy construction that provides the ideal blend of efficiency and durability, while the geometry creates a roomy top tube and short chainstays for easy climbing and confident descending.
- A FACT carbon fiber fork provides tons of compliance and absorbs chatter, while simultaneously keeping the overall weight of the bike down.
- The SRAM NX one-by groupset keeps things simple, and is ready to take on the trail for the long haul.

Skinny tires are for the road; Specialized’s Fatboy is for everything else. This lightweight aluminum frame is mated to a FACT carbon fork on 4.8-inch Ground Control tires that devour everything in your path. The super-wide aluminum rims give you stability and durability to roll through the rockiest, root-filled trail like it’s butter. With SRAM X7 drivetrain components providing slick shifting on all-day adventures or snowy cruises, you’ll be sure you get the push you need when speed’s what you’re after. And, you can bring it all back down to earthly limits thanks to the Tektro Draco hydraulic disc brakes. Trail? Sand? Snow? The Fatboy owns it all.

Whether you're out on the cross country race course or on a fast-paced ride with your buddies, Specialized's Epic Comp 29 excels. Its M5-aluminum frame descends and climbs superbly thanks to 100mm of Specialized's legendary Brain-controlled FSR suspension that delivers unparalleled pedal power and control. You'll also love the smooth 100mm RockShox Reba RL fork, crisp-shifting Shimano/SRAM 2x10 drivetrain and the sure-stopping Shimano Deore discs that let you hold maximum speed until the last possible second. Plus, the fast, 29-inch Roval wheels and Specialized tires deliver top-tier acceleration and traction and the Specialized bar, stem, and renowned Body Geometry saddle are up to any XC task.

Enjoy a whole new experience on the trail with Specialized’s Pitch Sport 650b. Its lightweight aluminum frame has a balanced geometry that is perfectly matched to 650b wheels for a ride that is lively on climbs and dialed on descents. An SR Suntour suspension fork soaks up the bumps, so flowy or rocky, you'll float down the trail. The 24-speed drivetrain delivers the right gear for every hill, and Shimano hydraulic-disc brakes keep your speed in-check in all conditions. And to round it out, Specialized outfits the Pitch with Body Geometry components for a fit that feels just right.

Specialized's Stumpjumper FSR Comp Carbon 650B is ready to shred right out the shop door. It's rocking 150mm of FSR rear travel with a Monarch shock, fat Specialized tires, a short stem with 750mm wide bars, and Specialized's awesome Command Post IRcc dropper post. Most importantly, the FACT carbon frame has a slack head angle and low bottom bracket so you can point the 150mm-travel RockShox Yari fork down the steepest descents, charge the nastiest terrain, and slay the corners with confidence. The Comp Carbon features Specailized's innovative SWAT Door, a downtube compartment with room for tools, a tube, and a pump so you can leave the bulky pack at home and still have everything you need. Rounding out the build is an efficient SRAM 1 x 11-speed drivetrain, SRAM Guide R brakes, and burly Roval Traverse wheels. Climb on, let rip, and see what the fuss is about.

Tested and proven by Specialized's gravity team on the World Cup downhill circuit and ridden in freeride contests across the globe, Specialized's Demo 8 Frame will help you go faster and bigger than ever before. With super-slack geometry, 200mm of terrain-flattening travel, and a low top tube, the Demo delivers point-and-shoot handling, perfect for stomping big hits and railing the nastiest rock gardens. Controlling the rear end is Öhlin's revolutionary TTX coil-over shock. It boasts adjustable high- and low-speed rebound as well as high- and low-speed compression damping for the ultimate in tunability and ride quality. This burly platform was designed around the 650b wheelsize to maximize speed and control, so build it up with a big-travel fork and fat rubber for a World Cup-level DH rig.

Raleigh's Redux 1 brings dirt-style fun and riding to a city street near you. Aggressive urban assault geometry and a lightweight aluminum frame and fork mean this slick-tired city ride charges hard and corners like your favorite mountain bike. And the 9-speed drivetrain has the gears you need without the complications and spare parts you don't. Toss in Tektro disc brakes and supportive, high-quality Raleigh components and the Redux 1 is a bike you'll go back to again and again.

Take your riding to a new level and make the mountain your playground with Specialized's Enduro Elite 29. This M5-aluminum trail sled is built to pedal up and absolutely crush it back down. A plush RockShox Pike fork keeps things planted up front while a Cane Creek DB AIR Inline drives the efficient FSR rear suspension to devour everything out back. SRAM's X1 drivetrain is on call for the pedaling department, while extra-wide Roval Traverse Fattie wheels shod with beefy, tubeless-ready rubber give you the green light to slay any corner you come across. Top it all off with Specialized's renowned Body Geometry saddle, a properly wide bar, and Specialized's Command Post IR, and you've got a rig that's just waiting to get you to a new level.

One part fat bike, one part 29er, and two parts awesome, Surly's Krampus rolls fast, holds speed, and devours corners. Surly built the frame and fork with chromoly and gave the frame a long top tube and short chainstays, so it's playful, smooth, versatile, and durable. The 29 x 3-inch Knard tires on 50mm Surly Rabbit Hole rims are what make this bike truly special. These big tires offer increased traction, incredible float, and reduce the need for suspension because the large volume is plenty to smooth the trail. You'll also get a Shimano Zee single-ring crankset, a Shimano rear derailleur for crisp shifts, and Avid BB7 brakes to give this guy some trail manners.

Take your riding to a new level and make the mountain your playground with Specialized's Enduro Elite 650B. This M5-aluminum trail sled is built to pedal up and absolutely crush it back down. A plush RockShox Pike fork keeps things planted up front while a Cane Creek DB AIR Inline drives the efficient FSR rear suspension to devour everything out back. SRAM's X1 drivetrain is on call for the pedaling department, while extra-wide Roval Traverse Fattie wheels shod with beefy, tubeless-ready rubber give you the green light to slay any corner you come across. Top it all off with Specialized's renowned Body Geometry saddle, a properly wide bar, and Specialized's Command Post IR, and you've got a rig that's just waiting to get you to a new level.

Enduro means pedaling up climbs, then charging hard and getting rowdy on the downs; Specialized's Enduro Expert Carbon 650B is tailor made to do just that. This ride shreds trail with a 160mm Pike RC fork up front and 165mm of rear travel deftly handled by a DB Air Inline shock. When it's time to climb back up and do it again, a FACT carbon mainframe and FSR rear suspension boasts a huge amount of traction paired with efficiency. Like all longer-travel bikes should, the Expert has a remote-actuated Command Post dropper post and 2.3-inch wide, tubeless tires so you can ease off the SRAM Guide RS brakes and let the properly wide Roval Traverse wheels trounce terra firma. With or without gravity's assistance, a pro-level SRAM X01 11-speed drivetrain lays down your power and the big, red S's own bar, stem, and renowned saddle continue the enduro theme perfectly.

Go beyond the lifts, higher than the shuttle truck, and pedal past those pushing up, and still absolutely crush the downhillls with Specialized's Enduro Expert Evo 650B. This gravity-fueled rig dissects every track with 180mm of coil-sprung travel front and rear thanks to the pairing of a RockShox Boxxer Team fork and an innovative Ohlins TTX22M shock. When it's time to climb back up and do it again, an M5 aluminum frame with FSR suspension boasts loads of traction and reasonable weight. Plus, this speed machine boasts lightweight, big hit-worthy Roval DH wheels, a pro-level SRAM 10-speed drivetrain and powerful SRAM Guide RS DH discs with an 200mm rotor up front.

Riding bikes is all about having fun, especially when you're a kid! Which is why Specialized made the Riprock 20 a bike that any of us would have drooled over as a little one. The A1 Premium Aluminum frame is lightweight and built to withstand the tough use doled out by kids, while the geometry features an ultra-low standover that makes it easy for your little ones to fit on the bike. A Custom SR Suntour XCT fork provides 60mm of bump-busting travel, while Shimano's Revoshift is uncomplicated and intuitive for kids to use. Watch them fly up hills with the Shimano 7-speed drivetrain and stay in control on the way back down thanks to the Tektro Aries disc brakes, which are easy for little hands to reach and deliver ample stopping power. Super wide tires wrapped around 20-inch aluminum wheels deliver heaps of traction, comfort, and stability and ensure that the Riprock is approved for fun anywhere.

Full suspension opens up a whole new world of speed and control off-road. Modernized with 27.5-inch hoops, the Dakar A2 is built on the frame platform that’s won Jamis numerous industry accolades and Bike of the Year awards. It's perfect for the experienced rider looking for full-suspension or for new riders looking for a head start in performance. An X-Fusion RC32 120mm fork and X-Fusion O2 shock provide controlled bump absorption, while Shimano hydraulic disc brakes ensure safe speeds on hairy descents. You also get reliable simplicity from the Shimano 1x10 drivetrain, and the wide and stiff Race Face handlebar and stem combo wrap up this value-packed singletrack machine.

Built to take on epic high-speed XC and long-distance races, the Dakota Race gives you efficient response thanks to dialed carbon fiber frame geometry and dependable components. SRAM's NX 1x11 drivetrain offers sure-fire shifting and great chain retention, and Shimano hydraulic disc brakes put down loads of stopping power. A RockShox Recon fork delivers 100mm of rock-eating suspension and features a 15 x 110mm Boost front hub for precise steering control, and WTB tubeless-ready wheels wrapped in dirt-skimming Vittoria Peyote rubber follow suit with stable tracking when you want it most. Ritchey Trail cockpit components wrap up this singletrack rocket, leaving it up to you to lead the pack to the finish.

Whether you're looking for your first mountain bike or a reliable hardtail to add to your stable, the Jamis Durango Comp has the styling and performance to satisfy your needs. The Durango frame features a sloping top tube that optimizes stand-over clearance while the over-size down tube and head tube offer plenty of strength and stiffness to maximize your pedaling effort. Grippy 29 x 2.25-inch CST Patrol tires paired to Alex alloy rims give you excellent traction with quick acceleration, and the Shimano 21-speed drivetrain and Tektro mechanical disc brakes let you climb the steepest trails and descend with confidence. Jamis touchpoints complete the cockpit, adding value to this all-around singletrack rambler.

Whether you're looking for your first mountain bike or a reliable hardtail to add to your stable, the Jamis Durango Comp has the styling and performance to satisfy your needs. The Durango frame features a sloping top tube that optimizes stand-over clearance while the over-size down tube and head tube offer plenty of strength and stiffness to maximize your pedaling effort. Grippy 29 x 2.25-inch CST Patrol tires paired to Alex alloy rims give you excellent traction with quick acceleration, and the Shimano 18-speed drivetrain and Tektro hydraulic disc brakes let you climb the steepest trails and descend with confidence. Jamis touchpoints complete the cockpit, adding value to this all-around singletrack rambler.

The Helix' lightweight and strong aluminum frame is a great platform for getting into mountain biking. Its low top tube makes it easy to put a foot down and features a 100mm travel suspension fork to increase control on bumpy trails. A wide-range 21-speed drivetrain ensures you always have the right gear when climbing steep hills or cruising along flat paths, and reliable linear pull rim brakes provide excellent speed control. Brake levers and shifters are easy to reach thanks to the taller front end and riser handlebar, putting you in the perfect position to steer the 27.5 x 2.25 CST Patrol tires toward your destination.

Building great recreational-level bikes that ride much like (and look a lot like) our hi-end bikes is a passion at Jamis. And no bikes showcase our commitment to do just that better than these. The Trail X and Helix chassis emphasizes all-day performance and the handling’s quick and sure without being overly darty. But make no mistake, if you want to throw down, they more than able to keep up with 27.5” wheels, precise shifting drivetrains and incredibly powerful disc or linear pull brakes.

The Helix' lightweight and strong aluminum frame is designed for women just getting into mountain biking. Its low top tube makes it easy to put a foot down and features a 100mm travel suspension fork to increase control on bumpy trails. A wide-range 24-speed drivetrain ensures you always have the right gear when climbing steep hills or cruising along flat paths, and powerful mechanical disc brakes provide excellent speed control, even in wet weather. Brake levers and shifters are easy to reach thanks to the taller front end and riser handlebar, putting you in the perfect position to steer the 27.5 x 2.25 CST Patrol tires toward your destination.

Thanks to the all-season versatility that 4.5-inch tires provide, you'll never be at a loss for places to ride with the Roughneck fat bike. The triple-butted 6061 aluminum frame and suspension-corrected fork are light in weight and super-responsive to keep you charging hard across all types of terrain, while the thru-axle hubs and tubeless-ready Sun Ringle MuleFut 80 SL rims paired with Kenda Juggernaut tires give you a huge contact patch for crazy traction in snow, sand, and otherwise technical situations. A bomber 1x11 Shimano/Race Face drivetrain and TRP Spyke mechanical disc brakes offer high performance and reliability in adverse conditions, and the Race Face alloy cockpit puts precise steering control at the ready. If weekend overnights in the backcountry are your jam, the Roughneck has all the bottle, cage, and rack mounts you need for creating the ultimate bikepacking rig, too. Alloy platform pedals and a WTB Volt saddle finish off this ready-to-ride all-conditions monster.

Building great mountain bikes at a great price is a passion at Jamis. And no bikes showcase their commitment to do just that better than the Trail X. Its lightweight aluminum frame, 100mm-travel fork, and 27.5-inch wheels emphasize all-day performance and handling that's quick, sure and stable. But make no mistake, if you want to throw down, its 21-speed Shimano drivetrain and powerful Tektro disc brakes are more than able to keep up with your crew.

The Trail XR is built for the rider looking for quality, versatility and affordability in a bike that can handle city streets, rail trails, campus shortcuts, and suburban cul-de-sacs with comfort and confidence. Inspired by real-deal mountain bikes, but tuned for everyday ‘round-town regular riding, the XR is the perfect fat-tired solution for the buyer on a budget.

Every Jamis youth bike uses size-specific items like grips, saddles and cranks that enhance comfort and control by providing the best possible bike. They focus on designing frames with low stand-over to take much of the awkwardness out of getting on board and dismounting after. They trim as much weight as we can with lightweight aluminum frames on many of the youth models and use aluminum parts where possible to work towards that make-it-as-light-as-possible goal. The additional benefit of this spec-as-much-alloy-as-possible design bias is that the product will hold up in the elements significantly better than other kids bikes built with more steel parts.

Jamis' lightweight and durable aluminum XR.26 frame is easier to pedal than steel and it's spec'd with a replaceable rear derailleur hanger for increased frame longevity. That rigid fork isn't just for cool looks; its light weight means greater control and safety for young riders. The XR.26 provides great standover clearance and a lower center of gravity for enhanced control and safety so aspiring mountain bikers can learn to ride both on and off road comfortably, securely and safely. The double chainring crankset offers increased gear range (14-speeds) with an alloy outer rock guard to protect the chainrings from contact with curbs or logs while also keeping pants and legs clean too!

Call it an SUV on two wheels. Even in rough terrain, the FullFatSix is always ready to show you its strength. The RockShox Bluto fork and the RockShox Monarch rear suspension provide 120mm travel front and rear, allowing you to ride through even the most technical terrain. The Yamaha motor system perfectly marries smooth function and fun, unbridled power. It uses three sensors (torque sensor, speed sensor, and crank sensor) to create a wholly organic feeling of assist. It’s so smooth, you might forget that you're pedaling uphill. The Li-Ion 400Wh battery is compact, tidy, and charges easily on or off the bike. It also easily locks onto the frame for added peace of mind when you’ve got to step away.

Downhill racing requires complete and utter faith in your equipment, and Specialized understands your desire to cherry pick and fine-tune every last component of your dream downhill rig. That's why they offer their legendary S-Works Demo 8 Alloy as a frameset. The stiff M5 aluminum frame provides stiffness, light overall weight, and strength. The 1.5-inch forged head tube enhances most of these qualities. The Demo 8's S3 Geometry and asymmetric frame design ensure plenty of frame access, a roomy top tube for added control, ultra-short, nimble chainstays, a low bottom bracket that keeps you feeling planted, and a slack front end that provides the utmost in responsive handling at speed.
The custom Öhlins rear shock delivers unparalleled DH performance. It offers high/low speed compression adjust that stands independent of the rebound adjust, enabling you to fine-tune the shock for the track at hand. It's 200mm of coil-sprung travel that stands without rival, and you won't find it anywhere else.

What goes up, must come down—throwing roost, launching hits, and draggin' the bars in corners. Specialized's S-Works Enduro 650b Frame makes the ups easier and the downs way more fun. The suspension dishes out 170mm of plushness controlled by the revolutionary custom Öhlins STX rear shock. Dialed geometry encourages you to stay off the brakes and tickle the limit as you scream into corners and come out with a grin. This frame fits 650B wheels for the most playful ride.

Ride over obstacles with ease on Specialized's Camber Comp 29. It starts with 120mm of their active FSR suspension which is built into a light, tough M5-aluminum frame. A 120mm-travel RockShox Revelation fork smooths the trail ahead so you can push the limit. Everything rolls on big Roval 29-inch wheels that carve corners and hold speed to keep you flowing ahead of your buddies. And don't forget about the Shimano disc brakes that easily scrub speed! And, the SRAM 2 x 11-speed drivetrain gives you the gears you need to beat your friends to the top of the climb. Top it all off with a whole host of Specialized's own components, including their comfy BG saddle, grippy tires, and wide handlebars, and you've got a shred-worthy rig ready to tackle any trail.

Get In Touch

Stay In Touch

Go Electric

BikeSource is your resource for quality bicycles, gear, and bike services. We’re here to help everyone from beginners to advanced cyclists. Visit us today for exceptional customer service and an incredible selection.